220133423 has 4 divisors (see below), whose sum is σ = 220571568. Its totient is φ = 219695280.

The previous prime is 220133413. The next prime is 220133447. The reversal of 220133423 is 324331022.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 220133423 - 2⁸ = 220133167 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220133395 and 220133404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220133413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 218318 + ... + 219323.

It is an arithmetic number, because the mean of its divisors is an integer number (55142892).

Almost surely, 2^220133423 is an apocalyptic number.

220133423 is a deficient number, since it is larger than the sum of its proper divisors (438145).

220133423 is an equidigital number, since it uses as much as digits as its factorization.

220133423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438144.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 220133423 is about 14836.8939808843. The cubic root of 220133423 is about 603.8030868051.

Adding to 220133423 its reverse (324331022), we get a palindrome (544464445).

The spelling of 220133423 in words is "two hundred twenty million, one hundred thirty-three thousand, four hundred twenty-three".